Food feed
One species
Black tea and green tea both come from Camellia sinensis. Their contrasting colors and flavors arise largely from what happens to the leaves after picking, rather than from separate plant species.
Berry
Bananas are botanical berries, while strawberries are aggregate accessory fruits. The distinction depends on how a flower becomes a fruit, not on sweetness, size or the name on a grocery label.
Legume
Peanuts are legumes, in the same plant family as peas and beans, rather than true botanical nuts. Their unusual feature is that the flowers develop above ground but the pods mature below it.